Unbeknown : অপ্রসিদ্ধ; অপরিজ্ঞাত;
Related Words
unbecoming  unbeknown  unbeknownst  See Words Also In
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Appropriate Prepositions
Bad at (অদক্ষ): He is not bad at English.
Count upon(নির্ভর করা): He always counts upon your help for this work.
Deal in (কোনো কিছুর ব্যবসা করা): They deal in green vegetables.
Indifferent to (উদাসীন): Everybody is indifferent to my problem.
Recover from (সুস্থ হওয়া; পূর্ব অবস্থায় ফিরে আসা): The patient has not yet recovered from his severe illness.
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Idioms
At the top of (শীর্ষে): The boy shouted at the top of his voice.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
Set free (মুক্ত করা): The prisoners were set free.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.
Well up (সুপন্ডিত)- Dr. Shahidullah was well-up in Bengali language.